Carelink are one of the leading implementers of Microsoft SharePoint - both WSS and SharePointPortal Server 2003 (SPS).
We gathered a large amount of experience with SPS2003, developing an understanding of its strengths and weaknesses. We developed a number of standard appraoches for teh most common business applications that SPS was used for and introduced work arounds and plug in technologues for many of the constraints or limitations the technology was burdened with.
Since it's launch we have shifted our focus entirely to Microsoft Office SharePoint 2007 (MOSS) and generally advise clients that they should not deploy using SPS unless there are very clear and insurmountable reasons for not moving to MOSS.
Pages in this area contain SPS specific information.