IBM's PC marketers look like they are going to be ex-IBM PC marketers, following the company's decision to put up to 10 per cent of PSG, its 10,000-strong PC division on the jobs scrap heap. Nearly all the lay-offs will come from marketing, -- overlapping positions will be eliminated on the return of the company's consumer business into the group PSG fold. That's a hell of a lot of overlap. IBM last year lost $1 billion flogging PCs, and it seems reasonable to infer that a big chunk of this came from selling through the retail sector. Now, the company is going to push consumer sales much harder over the Web. ®