A few other ideas for those looking to expose themselves, in a limited (or not?) way...
I see many people here use unsee or other similar temporary image/gallery sites. The problem is you can delete those whenever you want. Another option is to have your own site (I used to have my own exposure site, and helped many people have their own (not that frequented- only about 25 visitors a day) page on the web. However, this publishthis service below is a handy tool. You can design your own web page right in your email (pic, text, bold, italics, colors... all html) and simply send the email to publish this and you'll get a response in a few seconds. Whatever you had in your email body gets immediately turned into a website. They'll send you the link to your new site, as well as a link for deleting it (try a test one, it couldn't be easier.) Now you can choose to share that link with whoever you want.
https://www.publishthis.email
Afraid you'll just post the link, then chicken out 5 mins later and delete the web page? Well, there's an app for that too (really just a service.) The link below is for a service that sends an email on whatever date/time you tell it to. So... you could paste the "delete link" from above into a message on LetterMeLater, and schedule it to send to you in 2 days, a month, a year, etc. Furthermore, there's an option to not be able to edit the message once created (you can however delete the message, which you could regret.) Once you schedule your message, then go back into your email and delete the email from publishthis, and you won't be able to delete your page until you receive the link from lettermelater.
This also works for passwords, if you'd like to post a pic/gallery somewhere and not be able to delete it for a while. So if you wanted to post here, imagefap, newbienudes... anywhere... log in, change your password to something random like kjh6#asfd#*ugyp89eyrohe and also paste that into a hidden lettermelater message, and then post your pics, and log out. Of course this doesn't help if there's a "forget my password" button, but you can see the potential.
http://www.lettermelater.com/