Linda - set up a trash can e-mail addy for use on all those sites that demand an e-mail addy for 'registration'. Eg. lkorrow-too-honest@yahoo.com -or- simply lkorrow@yahoo.com.
Check the e-mail from time to time to keep it alive.
Quite handy in this spam ridden age of 'we demand to know who you are and how to contact you (*1)' sea of busy bodies.
P.S. - On Yuku - they have an alternate method of verifying your e-mail addy where you simply click on the link of the 'please verify' web-site page, and it comes with an option to simply re-enter your site-id password, and verify it with the 'prove your a human capable of reading extremely fuzzy letters' box - which essentially bypasses the email verification completely. They count that as 'e-mail' verification - so a false e-mail addy could be used (maybe, I did not test this) to 'register' your user id.
(*1) So we can sell your personal info to whomever we desire since you are nothing but a freeloader on our site and not entitled to anything unless you pony up dinero. Just one of the multitude of differences between our long time friend, Bob - and a lot of the rest of the current world.

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...