It probably depends on the price. I think it is $10/month right now which I personally wouldn't pay, but I had it when it first came out and they ran a sale for $5/mo. I found that I wasn't using it as much as I thought I would.
I've mentioned this before, but a lot of their mid-90s to mid-2000s comics are really screwed up. You can see where the speech balloons were on a separate layer in the digital file and a lot of them are mislaid, especially on double page spreads. So they are all stretched funny and not lined up where they should be. It's really bad on a lot of the Fantastic Four and Earth X/Paradise X/Universe X books, which were the main things I wanted to read when I had it.
They also have wrong release dates on a lot of the comics from that era which makes them hard to read in succession.
I would have a lot more interest in it if they put up trades, especially ones that are out of print.