Recently bought a site that has been growing steadily in google, ranks 1st page for keywords etc. and gets around 100-150 uniques a day and a has been for 2-3 months. Problem is i dare'nt touch the layout of the site in case i drop my search results ! I was thinking of adding a couple of new pages to the site, which only has 4 key pages at present, will i be risking a fall if do this...? im not very experienced yet at handling google.
Of course you won't. Just don't go moving your current pages around without providing redirects and you should be fine.
What's the worst thing that could happen? Your ranking drops! Honestly, if your site never changes (and it's not right now), your ranking will drop! So what do you have to lose?
adding a couple of new pages will not hurt your current rankings, unless in the rare occurence where the new pages are not even closely related to the current pages. add new pages and growing your site is an essential part of any site's long term SEO plan
It will not hurt unless you place too many links on those pages to other websites infact i think google likes site which updates daily!(IMO)
LOL. You can't stop adding content for the fear of losing existing ramnking, if anything, it should increase, or at least stay the same.
As long as it is unique quality content it should be a positive effect not a negative effect. You needn't touch the layout anyways just add the pages and link to them on your other pages. Make sure they are relevant is all.
All SEs love new content. Pages with unique and keyword rich content simply creates more entry pages for your site.