I would have to concur with you on the l-o-n-g sales copy. Even in the trade journals I cannot recount a single time I ever read one of those entire full page ads.
As in selling face-to-face, you need to know WHEN to ask for the order. You cannot simply keep talking and talking, selling and selling. I know. I've done it! I've seen those *glassy eyes* glazing over on my prospect and suddenly find myself where I cannot extricate myself! So I have to continue on... Talk about being awkward!
Same holds true in online sales copy. Time is of the essence. It isn't as if you're sitting in your recliner thumbing through an article or magazine at your leisure. You're in a hurry and impatient if a page takes too long to load! Whiz-bang!!! You're OUTTA THERE!
My sales copy is naturally succinct. Long enough to get the point across, yet short enough not to bore the masses. According to my stats, I'm still getting close to a 1:3 sign up ratio without the use of pop-ups. Personally, I can live with that.
My upcoming site will not start with a pop-up since I am desiring data based upon the text itself. After a baseline is established I will test different items, one being pop-ups.
Consider me an advocate of the shorter, more concise copy rather than the l-o-n-g tiring version. Of course I am a fan of bullets in the long copy! Keeps me from having to read your "Killer Copy"!!!
Success and Regards... Mike
Sales Copy That 's J - u - s - t Right!!!