Jeff Brown posts about them all the time on the bigger pockets blog. I LOVE his articles, I hate when he posts about EIULs. He's very smart about lots of Real Estate things, but at some point someone convinced him EIULs were good, he bought into the idea, and has been preaching it ever since. His other retirement posts are good, his other general posts are good, the EIUL stuff is junk.
I will say that he actually believes it - I don't think he's a shill for an insurance company, and I don't think he makes money off it. But the insurance companies are making money off of it. He genuinely believes it's good, and even advised his daughter and son-in-law to invest in the EIUL over 401k.
However, in general, they're a money maker for the insurance company selling it to you. There are much better financial vehicles to invest in.
The smart money buys term life insurance and invests the rest.
Oh, and one last thing for the OP, as an aside from EIULs... Don't invest in anything you don't understand. Would you tell a friend to blindly invest in "real estate" or would you encourage them to understand it first? :D