I pay to play at two online chess sites. But that’s like paying for service.
I also pay to play at another site that has chess forums as well as a big opening database and the ability to search for specific positions, players, games, etc. That’s more like paying for content.
I pay $25 annually for another forum that I don’t care to name here.
I pay for my website’s hosting, that’s about $5/month.
I pay for quite a few online content sites:
[ul]
[li]SDMB (of course)[/li][li]Wall Street Journal Online[/li][li]eBay market research services at Andale[/li][li]I kick a donation every now and then to an online BBS where I pick up Fidonet echomail[/li][li]I have a subscription at adland because subscribers have access to a huge archive of TV advertisements[/li][li]I pay a small sum at this weather site to remove banners and other ads when I’m online there.[/li][/ul]
Geez, I guess that’s quite a few. If the content is valuable to me, I have no problem paying for it.
I used to subscribe to a pron site but that got old quick. Theonly other thing I pay for on the web is here. Nothing else really interests me. But if I did find another forum or service on the web that was interesting or useful I wouldn’t have any problem paying for it as long as I could afford it.
I subscribed to launch.com (streaming music stations). It was $30 or $36 a year, I can’t remember. I haven’t listened to regular radio in ages, and I love commercial-free radio.
I occasionally subscribe to Fileplanet, but it’s an on-again, off-again thing for me.
I have an account on pBase, the picture-hosting website.
I’m also currently in the market for a web hosting service so i can have my own webpage. I have 50MB of free webspace through my university, but the serevice sucks because it is basic hard disk space, with no features (ftp, php, database, etc., etc.).
If you want to get technical, I don’t even subscribe here since my account was paid for me by another Doper. Once the expiration date looms, I’ll be a subscriber to this site and this site only though. (okay, and maybe LJ. I want more than three icons, damn it.)
Ucomics.com - $10/year - I don’t think I’ll re-subscribe, since I haven’t read them in months, but it’s a wonderful service. Daily comics page that serves me up Garfield en Espanol and Ted Rall side by side, and years and years of archives.
Dragonrealms.net - Online text-based game. $50/month or so. It’s…an addiction.
Website hosting - $10/month, hosting three sites of my own, including bandwidth-sucking fan-girly music videos, and one site for a friend. I’m barely touching the capacity. Like my cable modem, this is the service I will no longer go without. mhendo, I’m happy with fidelityhost.com and their $4.95 plan will work for you, but I know there’s a few people on the board that have an even cheaper, cooler service that starts with b. I can’t remember more than “b”…
fanfiction.net - $15 for three months, or something. I’m not sure I’ll keep it, as the advanced statistics aren’t that great.
Porn sites - Every six months or so I sign up for a free 3-day trial ($15-20), get what I need, then cancel.
Things that I’m not paying for that I should:
LJ - More icons aren’t enough of a draw. Their free service is far too good and their pay service, far too crappy.
Yahoo! Games
AOL - My mommy still pays. 
Thaks for the advice, but fidelityhost’s $4.95 plan doesn’t have enough space for me. While my university only gives me 50MB, and fidelityhost offers 250MB for $4.95 a month, i really want 500+MB so i can store a bunch of photos.
Right now, the leading contender is ipowerweb.com, which offers 800MB of webspace and 40GB of transfer for $7.95 a month. I have a web developer friend who uses it, and who is very happy with it.
I pay for Salon Premium, Consumer Reports, and a photo hosting service, Funtigo. I have a some credits over at Nerve Personals but I’ve decided I’m out o’the dating game. I also registered my MIRC version but I’m not sure if that counts. I keep debating about paying for the Salon forum, TableTalk but so far I’ve been satisfied with lurking.