Is it ok to link to other link sites....
 

if you don't have enough traffic yet to get trades with them? Or is it kinda like crashing their party?

I think it totally depends on what site it is.
Smaller mom/pops probably won't have a problem with it where bigger ones may.....this is just my guess. :)

Cool, thanks hun. I was going to email first to get permission anyway, but I didn't want to ask at all if it's considered a faux pas, ya know, lol.

I don't see why they would have a problem with it. Everyone has to start somewhere...

Link whoever you want. A lot of big sites get traffic because hundreds and thousands of little sites send them just one click a day. But, I really see no reason for you to link someone if there's no benefit for you.