Or say it's for the theme weekend or challenge. Anyone can link to other themes or challenges on one my theme/challenge memes...it helps get awareness to those memes that are intended to bring the community together for an event (Use The Username Weekend, Save Steve Harvey, Ain't Got Time For That Challenge, etc).
Or just ask permission. As long as it's related and isn't a meme I object to (NSFW or biased political posts for the most part) I'll usually give it the green light.
3 ups, 5y,
It's random self-promotion memes I don't like. Or if you're promoting a new user, as long as it doesn't hit one of the above noted objections that will almost definitely get the green light.