problem is with these sites you will probably get spammed to death, part with yer e-mail addy against 1 patch = spam in my book.some even want yer phone number,- not this kid.
....thats where i have a special e-mail just for junk! and spam. my spam blocker gets rid of those
as for phone number they dont get it
but usually, if they want the ins and outs i usually leave alone, otherwise i just wait for my freebies to come through the door..... i have never really had an problems