A new Yahoo study, in conjunction with comScore Networks, has discovered that when combined, search and display advertising deliver profoundly better results than when used independently.

Online users who were exposed to both the search and display advertising campaigns increased their share of page views relative to competitive sites by 68 percent, and time spent by 66 percent. More importantly, among those exposed to both the search and display ads, purchases of the advertiser’s products and services increased by 244 percent online and 89 percent offline compared to online users with similar behavior who were not exposed to these ads.

There’s also positive news for those seeking brand-lift.

In a recent study, Forrester Research assembled a list of 53 agencies and then selected six top providers to evaluate in-depth based on their revenues, balance of services, and enterprise focus.

There’s lots of interesting information relating to the strengths and weaknesses of each of the six top providers and tips for selecting your own vendor. You can purchase the full report for $995. Congratulations to iProspect for coming out on top, once again.

One interesting snippet of information. I knew iCrossing had been growing like crazy, but didn’t realize they’d had totally blown past by iProspect.

Here’s the top 6′s revenue numbers from SEM.

360i – $12M (SEM revenues in 2005)
iCrossing – $31.3M
IMPAQT – $7M
iProspect – $14.7M
Outrider – $10M (estimated)
Reprise Media – $15M