Adding loads of new pages - results in fewer pages indexed

is it better to add them gradually

[londrum]

i've noticed this a couple of times now -- everytime i add a load of brand new pages to my site (typically around 100 or so pages), instead of getting 100 extra pages indexed, i end up with about half my previous total.
it then takes a month or two to get everything indexed again.

the first time this happened i just put it down to a change in the algo or something, but now that it's happened again i'm starting to wonder whether google penalise you for having a rapidly expanding site.

i know they downgrade the value of links if you get a quick flurry of new ones, but do you think they penalise you for doubling the size of your site in the space of a few days as well.

is it better to introduce the new pages gradually?

[SEOPTI]

"half my previous total" - I don't understand?

[wheel]

IIRC Matt Cutts stated on his blog that you should be fine adding up to about 10K pages at once.

I've added 5K pages at once (on a solid site) and a few months had all sorts of problems, that a few months later seemed to resolve themselves...so I'd be a bit careful (I didn't diagnose it to see if the new content was the issue, but I'm suspicious). But I really can't see how 100 pages would be anywhere near causing an issue.

Plus, no need to trust the number of pages that show up as being indexed. The real guage is how your traffic fared.