Here is an example link from a removed spam post -
For those who want to know where this bit.ly link might take
them, simply add a plus ( + ) sign to the end of the link...
...and this will reveal that the actual link is...
If the O.P. is bona fide , it begs the question: why would he
not have given you this link in the first place?
The answer may be found at..
...where they point out...
This site is suspected to be a source of SPAM