Making Terms of Service Changes

[yoyo8]

How is it possible to make a change to a terms of service and have it apply to members who have signed up previously and agreed to the earlier tos?

Over time I have tweaked the tos but I want to add a fairly big change this time stating that I now have a non-exclusive, perpetual license to a user's written posts, regardless of whether they ask to be removed or not. In other words, I would be removing their account, but their written data would remain.

[kodaks]

You should send an email to each user informing them of the changes that will take place in the TOS. I did the same thing for my users a couple of months ago. My email that I sent out, looked like this:
------------------------------------------------------
Dear Users of ABC 123,

We would like to inform you that our website will change a part of it's Terms of Service starting August 11, 2004.

The summary of the changes are listed below:
blah
blah
blah

Please click on this link confirming that you have read and agree to this new terms of service.

NOTE: If you do not confirm to this new terms of service in 3 months, your account will be deleted.

Thank you again for your time and patience!

Sincerely,
John Doe
CEO of ABC 123
------------------------------------------------------
Hope this helps! -kodaks

[keyplyr]

This has been included in my TOS from day one. Makes things a lot easier :)

... reserve the right to amend, alter or delete portions of this agreement at any time, for any reason without notice.

[hannamyluv]

reserve the right to amend, alter or delete portions of this agreement at any time, for any reason without notice

You may want to look at how that might conflict with California's new Privacy law. It might be kosher, but depending on the type of change you are making, you may need to email any CA members to inform them.

[keyplyr]

...depending on the type of change you are making...

That says it all